summaryrefslogtreecommitdiffstats
path: root/dom/plugins/ipc/PluginModuleParent.h
blob: 909e8fe351c9d41d6008c423d6f99c1eed233b6c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: sw=4 ts=4 et :
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_plugins_PluginModuleParent_h
#define mozilla_plugins_PluginModuleParent_h

#include "base/process.h"
#include "mozilla/FileUtils.h"
#include "mozilla/HangAnnotations.h"
#include "mozilla/PluginLibrary.h"
#include "mozilla/plugins/PluginProcessParent.h"
#include "mozilla/plugins/PPluginModuleParent.h"
#include "mozilla/plugins/PluginMessageUtils.h"
#include "mozilla/plugins/PluginTypes.h"
#include "mozilla/ipc/TaskFactory.h"
#include "mozilla/TimeStamp.h"
#include "npapi.h"
#include "npfunctions.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "nsIObserver.h"
#ifdef XP_WIN
#include "nsWindowsHelpers.h"
#endif

class nsIProfileSaveEvent;
class nsPluginTag;

namespace mozilla {
namespace layers {
class TextureClientRecycleAllocator;
} // namespace layers

namespace plugins {
//-----------------------------------------------------------------------------

class BrowserStreamParent;
class PluginAsyncSurrogate;
class PluginInstanceParent;

#ifdef XP_WIN
class PluginHangUIParent;
#endif

/**
 * PluginModuleParent
 *
 * This class implements the NPP API from the perspective of the rest
 * of Gecko, forwarding NPP calls along to the child process that is
 * actually running the plugin.
 *
 * This class /also/ implements a version of the NPN API, because the
 * child process needs to make these calls back into Gecko proper.
 * This class is responsible for "actually" making those function calls.
 *
 * If a plugin is running, there will always be one PluginModuleParent for it in
 * the chrome process. In addition, any content process using the plugin will
 * have its own PluginModuleParent. The subclasses PluginModuleChromeParent and
 * PluginModuleContentParent implement functionality that is specific to one
 * case or the other.
 */
class PluginModuleParent
    : public PPluginModuleParent
    , public PluginLibrary
{
protected:
    typedef mozilla::PluginLibrary PluginLibrary;

    PPluginInstanceParent*
    AllocPPluginInstanceParent(const nsCString& aMimeType,
                               const uint16_t& aMode,
                               const InfallibleTArray<nsCString>& aNames,
                               const InfallibleTArray<nsCString>& aValues)
                               override;

    virtual bool
    DeallocPPluginInstanceParent(PPluginInstanceParent* aActor) override;

public:
    explicit PluginModuleParent(bool aIsChrome, bool aAllowAsyncInit);
    virtual ~PluginModuleParent();

    bool RemovePendingSurrogate(const RefPtr<PluginAsyncSurrogate>& aSurrogate);

    /** @return the state of the pref that controls async plugin init */
    bool IsStartingAsync() const { return mIsStartingAsync; }
    /** @return whether this modules NP_Initialize has successfully completed
        executing */
    bool IsInitialized() const { return mNPInitialized; }
    bool IsChrome() const { return mIsChrome; }

    virtual void SetPlugin(nsNPAPIPlugin* plugin) override
    {
        mPlugin = plugin;
    }

    virtual void ActorDestroy(ActorDestroyReason why) override;

    const NPNetscapeFuncs* GetNetscapeFuncs() {
        return mNPNIface;
    }

    bool OkToCleanup() const {
        return !IsOnCxxStack();
    }

    void ProcessRemoteNativeEventsInInterruptCall() override;

    virtual bool WaitForIPCConnection() { return true; }

    nsCString GetHistogramKey() const {
        return mPluginName + mPluginVersion;
    }

    virtual nsresult GetRunID(uint32_t* aRunID) override;
    virtual void SetHasLocalInstance() override {
        mHadLocalInstance = true;
    }

    int GetQuirks() { return mQuirks; }

protected:
    virtual mozilla::ipc::RacyInterruptPolicy
    MediateInterruptRace(const MessageInfo& parent,
                         const MessageInfo& child) override
    {
        return MediateRace(parent, child);
    }

    virtual bool
    RecvBackUpXResources(const FileDescriptor& aXSocketFd) override;

    virtual bool AnswerProcessSomeEvents() override;

    virtual bool
    RecvProcessNativeEventsInInterruptCall() override;

    virtual bool
    RecvPluginShowWindow(const uint32_t& aWindowId, const bool& aModal,
                         const int32_t& aX, const int32_t& aY,
                         const size_t& aWidth, const size_t& aHeight) override;

    virtual bool
    RecvPluginHideWindow(const uint32_t& aWindowId) override;

    virtual bool
    RecvSetCursor(const NSCursorInfo& aCursorInfo) override;

    virtual bool
    RecvShowCursor(const bool& aShow) override;

    virtual bool
    RecvPushCursor(const NSCursorInfo& aCursorInfo) override;

    virtual bool
    RecvPopCursor() override;

    virtual bool
    RecvNPN_SetException(const nsCString& aMessage) override;

    virtual bool
    RecvNPN_ReloadPlugins(const bool& aReloadPages) override;

    virtual bool
    RecvNP_InitializeResult(const NPError& aError) override;

    static BrowserStreamParent* StreamCast(NPP instance, NPStream* s,
                                           PluginAsyncSurrogate** aSurrogate = nullptr);

    virtual bool
    AnswerNPN_SetValue_NPPVpluginRequiresAudioDeviceChanges(
                                        const bool& shouldRegister,
                                        NPError* result) override;

protected:
    void SetChildTimeout(const int32_t aChildTimeout);
    static void TimeoutChanged(const char* aPref, void* aModule);

    virtual void UpdatePluginTimeout() {}

    virtual bool RecvNotifyContentModuleDestroyed() override { return true; }

    virtual bool AnswerGetKeyState(const int32_t& aVirtKey, int16_t* aRet) override;

    virtual bool RecvReturnClearSiteData(const NPError& aRv,
                                         const uint64_t& aCallbackId) override;

    virtual bool RecvReturnSitesWithData(nsTArray<nsCString>&& aSites,
                                         const uint64_t& aCallbackId) override;

    void SetPluginFuncs(NPPluginFuncs* aFuncs);

    nsresult NPP_NewInternal(NPMIMEType pluginType, NPP instance, uint16_t mode,
                             InfallibleTArray<nsCString>& names,
                             InfallibleTArray<nsCString>& values,
                             NPSavedData* saved, NPError* error);

    // NPP-like API that Gecko calls are trampolined into.  These 
    // messages then get forwarded along to the plugin instance,
    // and then eventually the child process.

    static NPError NPP_Destroy(NPP instance, NPSavedData** save);

    static NPError NPP_SetWindow(NPP instance, NPWindow* window);
    static NPError NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream,
                                 NPBool seekable, uint16_t* stype);
    static NPError NPP_DestroyStream(NPP instance,
                                     NPStream* stream, NPReason reason);
    static int32_t NPP_WriteReady(NPP instance, NPStream* stream);
    static int32_t NPP_Write(NPP instance, NPStream* stream,
                             int32_t offset, int32_t len, void* buffer);
    static void NPP_StreamAsFile(NPP instance,
                                 NPStream* stream, const char* fname);
    static void NPP_Print(NPP instance, NPPrint* platformPrint);
    static int16_t NPP_HandleEvent(NPP instance, void* event);
    static void NPP_URLNotify(NPP instance, const char* url,
                              NPReason reason, void* notifyData);
    static NPError NPP_GetValue(NPP instance,
                                NPPVariable variable, void *ret_value);
    static NPError NPP_SetValue(NPP instance, NPNVariable variable,
                                void *value);
    static void NPP_URLRedirectNotify(NPP instance, const char* url,
                                      int32_t status, void* notifyData);

    virtual bool HasRequiredFunctions() override;
    virtual nsresult AsyncSetWindow(NPP aInstance, NPWindow* aWindow) override;
    virtual nsresult GetImageContainer(NPP aInstance, mozilla::layers::ImageContainer** aContainer) override;
    virtual nsresult GetImageSize(NPP aInstance, nsIntSize* aSize) override;
    virtual void DidComposite(NPP aInstance) override;
    virtual bool IsOOP() override { return true; }
    virtual nsresult SetBackgroundUnknown(NPP instance) override;
    virtual nsresult BeginUpdateBackground(NPP instance,
                                           const nsIntRect& aRect,
                                           DrawTarget** aDrawTarget) override;
    virtual nsresult EndUpdateBackground(NPP instance,
                                         const nsIntRect& aRect) override;

#if defined(XP_WIN)
    virtual nsresult GetScrollCaptureContainer(NPP aInstance, mozilla::layers::ImageContainer** aContainer) override;
#endif

    virtual nsresult HandledWindowedPluginKeyEvent(
                       NPP aInstance,
                       const mozilla::NativeEventData& aNativeKeyData,
                       bool aIsConsumed) override;

#if defined(XP_UNIX) && !defined(XP_MACOSX)
    virtual nsresult NP_Initialize(NPNetscapeFuncs* bFuncs, NPPluginFuncs* pFuncs, NPError* error) override;
#else
    virtual nsresult NP_Initialize(NPNetscapeFuncs* bFuncs, NPError* error) override;
#endif
    virtual nsresult NP_Shutdown(NPError* error) override;

    virtual nsresult NP_GetMIMEDescription(const char** mimeDesc) override;
    virtual nsresult NP_GetValue(void *future, NPPVariable aVariable,
                                 void *aValue, NPError* error) override;
#if defined(XP_WIN) || defined(XP_MACOSX)
    virtual nsresult NP_GetEntryPoints(NPPluginFuncs* pFuncs, NPError* error) override;
#endif
    virtual nsresult NPP_New(NPMIMEType pluginType, NPP instance,
                             uint16_t mode, int16_t argc, char* argn[],
                             char* argv[], NPSavedData* saved,
                             NPError* error) override;
    virtual nsresult NPP_ClearSiteData(const char* site, uint64_t flags, uint64_t maxAge,
                                       nsCOMPtr<nsIClearSiteDataCallback> callback) override;
    virtual nsresult NPP_GetSitesWithData(nsCOMPtr<nsIGetSitesWithDataCallback> callback) override;

private:
    std::map<uint64_t, nsCOMPtr<nsIClearSiteDataCallback>> mClearSiteDataCallbacks;
    std::map<uint64_t, nsCOMPtr<nsIGetSitesWithDataCallback>> mSitesWithDataCallbacks;

    nsCString mPluginFilename;
    int mQuirks;
    void InitQuirksModes(const nsCString& aMimeType);

public:

#if defined(XP_MACOSX)
    virtual nsresult IsRemoteDrawingCoreAnimation(NPP instance, bool *aDrawing) override;
#endif
#if defined(XP_MACOSX) || defined(XP_WIN)
    virtual nsresult ContentsScaleFactorChanged(NPP instance, double aContentsScaleFactor) override;
#endif

    void InitAsyncSurrogates();

    layers::TextureClientRecycleAllocator* EnsureTextureAllocatorForDirectBitmap();
    layers::TextureClientRecycleAllocator* EnsureTextureAllocatorForDXGISurface();

protected:
    void NotifyFlashHang();
    void NotifyPluginCrashed();
    void OnInitFailure();
    bool MaybeRunDeferredShutdown();
    bool DoShutdown(NPError* error);

    bool GetSetting(NPNVariable aVariable);
    void GetSettings(PluginSettings* aSettings);

    bool mIsChrome;
    bool mShutdown;
    bool mHadLocalInstance;
    bool mClearSiteDataSupported;
    bool mGetSitesWithDataSupported;
    NPNetscapeFuncs* mNPNIface;
    NPPluginFuncs* mNPPIface;
    nsNPAPIPlugin* mPlugin;
    ipc::TaskFactory<PluginModuleParent> mTaskFactory;
    nsString mPluginDumpID;
    nsString mBrowserDumpID;
    nsString mHangID;
    RefPtr<nsIObserver> mProfilerObserver;
    nsCString mPluginName;
    nsCString mPluginVersion;
    int32_t mSandboxLevel;
    bool mIsFlashPlugin;

#ifdef MOZ_X11
    // Dup of plugin's X socket, used to scope its resources to this
    // object instead of the plugin process's lifetime
    ScopedClose mPluginXSocketFdDup;
#endif

    bool
    GetPluginDetails();

    friend class mozilla::plugins::PluginAsyncSurrogate;

    bool              mIsStartingAsync;
    bool              mNPInitialized;
    bool              mIsNPShutdownPending;
    nsTArray<RefPtr<PluginAsyncSurrogate>> mSurrogateInstances;
    nsresult          mAsyncNewRv;
    uint32_t          mRunID;

    RefPtr<layers::TextureClientRecycleAllocator> mTextureAllocatorForDirectBitmap;
    RefPtr<layers::TextureClientRecycleAllocator> mTextureAllocatorForDXGISurface;
};

class PluginModuleContentParent : public PluginModuleParent
{
  public:
    explicit PluginModuleContentParent(bool aAllowAsyncInit);

    static PluginLibrary* LoadModule(uint32_t aPluginId, nsPluginTag* aPluginTag);

    static PluginModuleContentParent* Initialize(mozilla::ipc::Transport* aTransport,
                                                 base::ProcessId aOtherProcess);

    static void OnLoadPluginResult(const uint32_t& aPluginId, const bool& aResult);
    static void AssociatePluginId(uint32_t aPluginId, base::ProcessId aProcessId);

    virtual ~PluginModuleContentParent();

#if defined(XP_WIN) || defined(XP_MACOSX)
    nsresult NP_Initialize(NPNetscapeFuncs* bFuncs, NPError* error) override;
#endif

  private:
    virtual bool ShouldContinueFromReplyTimeout() override;
    virtual void OnExitedSyncSend() override;

    static PluginModuleContentParent* sSavedModuleParent;

    uint32_t mPluginId;
};

class PluginModuleChromeParent
    : public PluginModuleParent
    , public mozilla::HangMonitor::Annotator
{
  public:
    /**
     * LoadModule
     *
     * This may or may not launch a plugin child process,
     * and may or may not be very expensive.
     */
    static PluginLibrary* LoadModule(const char* aFilePath, uint32_t aPluginId,
                                     nsPluginTag* aPluginTag);

    /**
     * The following two functions are called by SetupBridge to determine
     * whether an existing plugin module was reused, or whether a new module
     * was instantiated by the plugin host.
     */
    static void ClearInstantiationFlag() { sInstantiated = false; }
    static bool DidInstantiate() { return sInstantiated; }

    virtual ~PluginModuleChromeParent();

    /*
     * Takes a full multi-process dump including the plugin process and the
     * content process. If aBrowserDumpId is not empty then the browser dump
     * associated with it will be paired to the resulting minidump.
     * Takes ownership of the file associated with aBrowserDumpId.
     *
     * @param aContentPid PID of the e10s content process from which a hang was
     *   reported. May be kInvalidProcessId if not applicable.
     * @param aBrowserDumpId (optional) previously taken browser dump id. If
     *   provided TakeFullMinidump will use this dump file instead of
     *   generating a new one. If not provided a browser dump will be taken at
     *   the time of this call.
     * @param aDumpId Returns the ID of the newly generated crash dump. Left
     *   untouched upon failure.
     */
    void TakeFullMinidump(base::ProcessId aContentPid,
                          const nsAString& aBrowserDumpId,
                          nsString& aDumpId);

    /*
     * Terminates the plugin process associated with this plugin module. Also
     * generates appropriate crash reports unless an existing one is provided.
     * Takes ownership of the file associated with aDumpId on success.
     *
     * @param aMsgLoop the main message pump associated with the module
     *   protocol.
     * @param aContentPid PID of the e10s content process from which a hang was
     *   reported. May be kInvalidProcessId if not applicable.
     * @param aMonitorDescription a string describing the hang monitor that
     *   is making this call. This string is added to the crash reporter
     *   annotations for the plugin process.
     * @param aDumpId (optional) previously taken dump id. If provided
     *   TerminateChildProcess will use this dump file instead of generating a
     *   multi-process crash report. If not provided a multi-process dump will
     *   be taken at the time of this call.
     */
    void TerminateChildProcess(MessageLoop* aMsgLoop,
                               base::ProcessId aContentPid,
                               const nsCString& aMonitorDescription,
                               const nsAString& aDumpId);

#ifdef XP_WIN
    /**
     * Called by Plugin Hang UI to notify that the user has clicked continue.
     * Used for chrome hang annotations.
     */
    void
    OnHangUIContinue();

    void
    EvaluateHangUIState(const bool aReset);
#endif // XP_WIN

    virtual bool WaitForIPCConnection() override;

    virtual bool
    RecvNP_InitializeResult(const NPError& aError) override;

    void
    SetContentParent(dom::ContentParent* aContentParent);

    bool
    SendAssociatePluginId();

    void CachedSettingChanged();

    virtual bool
    AnswerGetKeyState(const int32_t& aVirtKey, int16_t* aRet) override;

private:
    virtual void
    EnteredCxxStack() override;

    void
    ExitedCxxStack() override;

    mozilla::ipc::IProtocol* GetInvokingProtocol();
    PluginInstanceParent* GetManagingInstance(mozilla::ipc::IProtocol* aProtocol);

    virtual void
    AnnotateHang(mozilla::HangMonitor::HangAnnotations& aAnnotations) override;

    virtual bool ShouldContinueFromReplyTimeout() override;

    PluginProcessParent* Process() const { return mSubprocess; }
    base::ProcessHandle ChildProcessHandle() { return mSubprocess->GetChildProcessHandle(); }

#if defined(XP_UNIX) && !defined(XP_MACOSX)
    virtual nsresult NP_Initialize(NPNetscapeFuncs* bFuncs, NPPluginFuncs* pFuncs, NPError* error) override;
#else
    virtual nsresult NP_Initialize(NPNetscapeFuncs* bFuncs, NPError* error) override;
#endif

#if defined(XP_WIN) || defined(XP_MACOSX)
    virtual nsresult NP_GetEntryPoints(NPPluginFuncs* pFuncs, NPError* error) override;
#endif

    virtual void ActorDestroy(ActorDestroyReason why) override;

    // aFilePath is UTF8, not native!
    explicit PluginModuleChromeParent(const char* aFilePath, uint32_t aPluginId,
                                      int32_t aSandboxLevel,
                                      bool aAllowAsyncInit);

    void CleanupFromTimeout(const bool aByHangUI);

    virtual void UpdatePluginTimeout() override;

    void RegisterSettingsCallbacks();
    void UnregisterSettingsCallbacks();

    virtual bool RecvNotifyContentModuleDestroyed() override;

    static void CachedSettingChanged(const char* aPref, void* aModule);

    virtual bool
    AnswerNPN_SetValue_NPPVpluginRequiresAudioDeviceChanges(
                                        const bool& shouldRegister,
                                        NPError* result) override;

    PluginProcessParent* mSubprocess;
    uint32_t mPluginId;

    ipc::TaskFactory<PluginModuleChromeParent> mChromeTaskFactory;

    enum HangAnnotationFlags
    {
        kInPluginCall = (1u << 0),
        kHangUIShown = (1u << 1),
        kHangUIContinued = (1u << 2),
        kHangUIDontShow = (1u << 3)
    };
    Atomic<uint32_t> mHangAnnotationFlags;
#ifdef XP_WIN
    InfallibleTArray<float> mPluginCpuUsageOnHang;
    PluginHangUIParent *mHangUIParent;
    bool mHangUIEnabled;
    bool mIsTimerReset;

    /**
     * Launches the Plugin Hang UI.
     *
     * @return true if plugin-hang-ui.exe has been successfully launched.
     *         false if the Plugin Hang UI is disabled, already showing,
     *               or the launch failed.
     */
    bool
    LaunchHangUI();

    /**
     * Finishes the Plugin Hang UI and cancels if it is being shown to the user.
     */
    void
    FinishHangUI();
#endif

    friend class mozilla::plugins::PluginAsyncSurrogate;

    void OnProcessLaunched(const bool aSucceeded);

    class LaunchedTask : public LaunchCompleteTask
    {
    public:
        explicit LaunchedTask(PluginModuleChromeParent* aModule)
            : mModule(aModule)
        {
            MOZ_ASSERT(aModule);
        }

        NS_IMETHOD Run() override
        {
            mModule->OnProcessLaunched(mLaunchSucceeded);
            return NS_OK;
        }

    private:
        PluginModuleChromeParent* mModule;
    };

    friend class LaunchedTask;

    bool                mInitOnAsyncConnect;
    nsresult            mAsyncInitRv;
    NPError             mAsyncInitError;
    // mContentParent is to be used ONLY during the IPC dance that occurs
    // when ContentParent::RecvLoadPlugin is called under async plugin init!
    // In other contexts it is *unsafe*, as there might be multiple content
    // processes in existence!
    dom::ContentParent* mContentParent;
    nsCOMPtr<nsIObserver> mPluginOfflineObserver;
    nsCString mProfile;
    bool mIsBlocklisted;
    static bool sInstantiated;
};

} // namespace plugins
} // namespace mozilla

#endif // mozilla_plugins_PluginModuleParent_h